Ventilating-window.



Patented June 1, 19%

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ALEXANDER F. SMITH. OF READING, PENNSYLVANIA.

VENTILATING-WINDOW.

tie. 923,450.

Specification of Letters Patent.

Patented June 1, 1909.

Application filed January 28, 1909. Serial No. 474,844. I

for securing proper ventilation of rooms through the frames of Windows of ordinary general construction and independently of the sash movement.

Windows of the vertically-movable-sash type referred to, which are commonly known as double-hung windows, have frames which are formed with weight boxes rearward of thesash runs and with pulley stiles forming walls common to botl Effort has heretofore been made to utilize this box space as a means of ventilating connnunication between the outer air and the inclosed-room. My invention provides for thus utilizing it in such a manner as to properly locate and direct the flowing current of air to secure the most satisfactory results, while at the same time avoiding LlllllOUll} or unsightly structural changes or additions and permitting convenient regulation of the ventilating flow. v

The invention is fully described in connec tion with the accompanying drawing and is specifically pointed out in the claims.

Figure 1 is an inside elevation of a window embodying my improvements, partly in section on the line 11 of Fig. 2. Fig. 2- is a section on the line 22 of Fig. 1. Fig. 3 is a section on the line 33 of Fig. 1.

The general construction of the window indicated in the drawings is well known, and only brief reference is necessary to the ordinary features thereof in connection with which my improvements are employed. The lower sash 2 which is guided in the inner sash runs 3 on opposite sides of the window frame, and the upper sash 4 which is in'lilre manner guided in the parallel outer sash runs 5, are each hung as usual upon pulley cords or chains provided with counterhah ance weights 6 which are vertically movable weight boxes 7 formed in the sides of the low at the rear'of the sash runs 3 and uh box 7 being divided as she wn into com Testing weight cinnlpartments by a para strip 8, and the sas runs 3 and 5 being rated as usual by parting beads 9, and

bounded by an outer casing or bead 10 and an inner casing or head 11, while the pulleystiles 12 partition the sash runs from the weight boxes or compartments at the rear thereof.

In providing for ventilating communication between the outside air and an inclosed room, and particularly in providing for securing an inflowing current of outside air, it is important that the exterior ventilating .aperture be so located or protected as to prevent a too free admission of blasts of air y causing the same to be deflected, and also that the interior aperture be arranged to so direct the inflowing air as to prevent or minimize objectionable drafts.

In utilizing the weight boxes formed in the window frames as a means of communication between the outside air and the room, my main object therefore is to provide for a lateral inflow of air to the box from the outside-that is in a direction parallel with the plane of an adjacent sash which may thus serve to deflect the current, and fora like discharge from the box at the inner side of the sash so as to retain the air close to the window until its temperature has been raised.

Further objects are to provide for admitthe outside air to the lower .portion of the weight boxes and for discharging it into the room from the upper portion thereof, and to accomplish these results in a simple manner without change in the general window construction and operation.

In the general construction shown it will be seen that when the sashes are in closed position with their meeting rails 2 and 4 in juxtaposition, the lower portions of the inner sash runs 3 are loosely occupied by the inner sash 2 while the upper portions thereof are open to the room; and that: the upper portions of the outer sash runs5 are in like manner occupied by the outer sash 4 while the lower portions thereof are open to the outside air. I have found that these conditions permit the attainment of the objects of my invention as above stated in a very simple and satisfactory manner, by merely changing the pulley-stiles 12 from closed walls orpartitions between the weight boxes or compartments and thcsash runs, as heretofore, to apertured walls or partitions arranged to throw said weight boxes intocommunication with the outside air at a portion outside of the being also protected from lower sash and with the room at a portion inside of the upper sash; and to provide suitable means for regulating the communication by opening and closing said apertures.

stile partitions are shown portion of the inner sash-run 3, and at 16 in.

the'lower portion of the outer sash-run 5, and are provided which may be conveniently operated and which are so arranged as not to interfere with the usual free movement of the sashes.

When the registers at 15 and 16 are opened, the outside air is only'admitted to the lower portionof the weight box, at 16, in a lateral direction as indicated by the arrow; the inlet direct blasts by the projecting outer casing or head 10. The air thus admitted to the weight boxes passes upward in the latter, and is discharged into the room in reverse direction from that in it is admitted to the box and in the plane of the lower sash so that its efi'ect not felt at any distance from the window.

The invention may obviously be readily applied to old windows as well as new, and involves but little expense in excess of the ordinary and no objectionable change in the appearance of the window.

as a draft is g with suitable register devices which a l i i 3.? hat I claim is V 1. In a double-hung window, a frame having; a side member formed with communicating weight-boxes and inner and outer sash runs, each of said boxes and sash runs having a common pulle -sti1e wall provided for a portion of its height with ventilating open ings to said boxes whereby air is admitted to the latter in the plane of one sash and is dis charged therefrom in reverse direction in the plane of the other sash.

2. in a double-hung window, ing aside member formed with communicating weight boxes and inner and outer sash runs, each of said boxes and sash runs having a common pulley-stile wall the inner one of which is provided at its upper portion, and

' with ventithe outer one at its lower portlon, lating openings to said boxes whereby outside air is admitted to the lower portion of the latter in the plane of the outer sash and discharged from the upper portion thereof in the plane of the inner sash.

In testimony whereof, I affix my signature, in the presence of two witnesses.

- ALEX. F. SMITH.

Witnesses: v D. M. STEWART,

' W. G. STEWART.

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